US stock market center: Exclusive offer full industry sector stocks, premarket after-hours, ETF, warrants night network real-time quotes, nightlife network Finance YORK, July 10 message, Renaissance Capital (Renaissance Capital) Charles Robertson, global chief economist do amazing prediction, saying that Greece and China as well as factors that may cause the Federal Reserve to raise interest rates US stocks plunged around 50%。 He stressed that in 2008, seven years after the financial crisis in the past, the global economy is still very fragile。 He said: "Now we have seen the global economy in the face of the Greek crisis how fragile。The second risk comes from China, it is likely to be some kind of serious deterioration of the situation。A third risk comes from the Federal Reserve to raise interest rates。"For the Fed to raise interest rates, he believes may have 'consequences can not be estimated in advance people'。 Robertson was first predicted stocks would fall by 50%, says history shows this year, the S & P 500 will begin to slow down in January 2015。Currently located at 2046 S & P 500 points, while Robertson predicted in March 2016 will drop to 1100 points, the US economy will fall into recession。 But he also pointed out that once the stock market was cut will bring "tremendous buying opportunity."。So far this year the S & P 500 index fell 0.6%。 However, not all market participants are so pessimistic。 Laith Khalaf, senior analyst at Hargreaves Lansdown wrote in the report: "For long-term investors, they should resist the urge to cash in stock。If you each time the bad news to sell, buy it back after the situation improved, so selling one to buy you may lose money。"Jim McCaughan Asset Management Group Principal Global Investors chief executive said he is looking for buying opportunities the global market。He said: "The situation in China belong to a closed system of excess liquidity caused by extreme volatility。China's stock market is still not cheap, so the market is still a dangerous。But I will continue to buy US stocks at the time the callback。"(Shofu compilation)